Flow Rate Closed/Open Systems

[globaldesigns]

Originally Posted by Myka

I edited my post. I don't recommend Mag pumps for anything other than mixing salt. They are noisy and I have had trouble with them not restarting after power outs.

I have 4 powerheads and a Wavebox in my 90.

Actually I differ... I used a Mag 18 pump for a couple years without issue, and they are not noisy at all. At least mine wasn't. They are rugged and work nicely, also they are very compact in size for the power they produce.

Now in saying that, as I recently went on holidays, and my pump is 2-3 years old, I replaced it and kept the old Mag as a backup (I didn't want to take any chances, with me not being around for 2 weeks). I wanted to try the Eheim (model 1262), so I did and can say it is also quite quiet.

If I was to compare the 2 brands I have now used. I can say the Eheim is quieter, but that is compared by putting my ear against the sump glass, outside of that, I can't hear either. Even though the Mag 18 is rated with more throughput overall, I do think the Eheim is rated lower, even though it isn't. My reasoning on this is that the water flow through the system is comparable between both models.